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2. Day and night camera - Wikipedia

   en.wikipedia.org/wiki/Day_and_night_camera

   Day and night camera. A day and night camera is a security camera that can see the picture during the day hours, when there is enough sunlight, and during the night in total darkness or minimum illumination. A day and night camera has special lenses that allow infrared emission produced by infrared LEDs and reflected from objects to go through ...

3. Closed-circuit television - Wikipedia

   en.wikipedia.org/wiki/Closed-circuit_television

   Previous generations of wireless security cameras relied on analogue technology; modern wireless cameras use digital technology which delivers crisper audio, sharper video, and a secure and interference-free signal. [144] Now-a-days Smart dual light is used in cameras for night vision and to record brighter videos of dark rooms. [145]

4. Night-vision device - Wikipedia

   en.wikipedia.org/wiki/Night-vision_device

   The effect on the natural night vision of the eye is evident A standard telescopic sight augmented with a night-vision device in front on the M110. Note that in addition to the image intensifier, the NVD gathers much more light by its much larger aperture A 1PN51-2 night-vision reticle with markings for range estimation First-person view ...

5. Pennsylvania - Wikipedia

   en.wikipedia.org/wiki/Pennsylvania

   Pennsylvania (/ ˌ p ɛ n s ɪ l ˈ v eɪ n i ə / ⓘ PEN-sil-VAY-nee-ə, lit. ' Penn's forest country '), officially the Commonwealth of Pennsylvania [b] (Pennsylvania Dutch: Pennsylvanie), [7] is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States.

6. Police body camera - Wikipedia

   en.wikipedia.org/wiki/Police_body_camera

   A police officer wearing a body camera on his uniform. In policing equipment, a police body camera or wearable camera, also known as body worn video (BWV), body-worn camera (BWC), or body camera, is a wearable audio, video, or photographic recording system used by police to record events in which law enforcement officers are involved, from the perspective of the officer wearing it.

7. Night vision - Wikipedia

   en.wikipedia.org/wiki/Night_vision

   Night vision is the ability to see in low-light conditions, either naturally with scotopic vision or through a night-vision device. Night vision requires both sufficient spectral range and sufficient intensity range. Humans have poor night vision compared to many animals such as cats, dogs, foxes and rabbits, in part because the human eye lacks ...